Combination heater



March 4 1924.

. 1,485,668 E. P. COLE COMBINATION HEATER Filed April 13, 1921 fzvenr:fdwczni Z? 60%;

ED'e 11KB P. CQLE, (3 GZFHSAGO, I l LENSES,

Par-ix,

CEICEEGO, ILLTNGIS,

ASSIG-NUR TO COLE MANUFACTURING COM- A CORPORATION OF ILLINOIS.

COMBINATION HEATER.

Application filed April 18, 1921.

This invention relates to stoves or heaters but more particularly tosuch as are capable of burning either fluid or solid fuels and has forits primary object to provide a simple, economical and effective heaterof this class.

Further objects provide improved com eliminate fluid fuel of theinvention are to on of the fuel, to

our combustion chamber, to reduce the cost of production, to facilitatethe use of bituminous coal, and in general to provide an improvedheating apparatus.

The many other objects advantages of the invention will be betterunderstood by reference to the following specification when consideredin connection with the accompanying drawing illustrating a selectedembodiment thereof, in which Fig. 1 is a central vertical section of theheater, and V Fig. 2 is a section on the line 22 of Fig. 1.

Referring to the drawing, the heater comprises a casing 5 mounted on abasefi and provided with a solid fuel grate 7, an ash receiver 8, doors9 and 10, and a flue 11. The door 9 is provided with the usual damper toregulate the admission of air beneath the fire-box. An opening 12 isprovided in the top of the casing and the wall about this 0 ening ispreferably depressed to form a socket 13. A seat 1% for a rotary damper15 is provided in this socket.

A. pipe 16 passes through the opening 12 and is supported by its flaringupper end 17 which fits within the socket 123. A fluid fuel nozzle 18projects through the damper 15 and is fed by the supply pipe 19 providedwith a control cook 20.

l lhen fluid is being used, the pipe 16 acts as a large Bunsen burner.The fuel enter this pipe from the nozzle 18 and is mixed with airadmitted through the damper 15 about this burner. Combustion takes placeat the base of the pipe 16 and a hot blue flame is projected therefrom.If the fluid Serial .No. 462,241.

fuel is to be used exclusively over, an extended period, it is advisabletofill the grate with broken stone, brick or other similarnon-combustible material. The flame from the pipe 16 quickly heats thismaterial to a high temperature. The fuel supply may then be shut off andsufficient heat will be radiated by this material for a considerableperiod to maintain a proper temperature in the room. This results in avery material saving in fuel consumption. By the disposition of the pipe16 above the flame, the combined air and fluid fuel therein becomesheated prior to combustion and a more complete combustion results. v

To operate the heater with solid fuel, the grate is filled in the usualway and the damper in the door 9 opened. The damper 15 is preferablyclosed until the paper and Wood have been at least partially consumedand the coal has been suficiently heated to commence giving oil gas. Atthis time the lower damper is preferably closed and the damper 15 openedto cause a blast of heated air to enter the combustion chamber from thepipe 16. This hot air mixes with the gas and complete combustion takesplace. As soon as the coal has ceased to give off gas, the damper 15should preferably be closed and the lower damper opened as combustionwill then proceed more advantageously by admitting the air supply belowthe grate.

The entire heater is exceedingly simple in construction and may beeconomically produced. Improved combustion of both fluid and solid fuelis procured and a material saving in both solid and fluid fuelconsumption is provided. The usual perforated fluid fuel pipes in thecombustion chamber are eliminated. The perforations in these pipesquickly became filled by the dust and ashes and required constantattention. The holes in the heater necessary to admit these pipes arelikewise eliminated. The hot air blast above the fire provided by thedepending pipe obviates the danger of escaping gas so frequentlyresulting from incomplete combustion and thus renders the use of soft orbituminous coal for room heaters entirely safe and practical.

I am aware that many changes may be made in the form and arrangement ofparts without departing from the spirit of my indirectly exposed to theburning gases in said combustion chamber, and means for provid ingregulated supplies of air andgas to the upper portion of said burnerpipe, the latter having a discharge outlet adjacent and above the top ofsaid firepot and arranged to project downwardly into either a blast ofhot air or of a highly heated mixture of air and gas, substantially asdescribed.

2. A combination coal and gas heater comprising a casing having afirepot for containing coal or refractory material, a combustion chamberabove the firepot and an ashpit below the same, a hot blast pipedepending within the central portion of said combustion chamber, adamper at the upper end of said pipe for controlling the admission ofair to said chamber through said pipe, a fluid fuel supply pipeprojecting i lsiaoee through said damper, and a control cock indownwardly into said firepot either a blast of hot air or a highlyheated mixture of air and gas, substantially as described.

3. A combination coal and gas heater comprising a casing having afirepot for containing coal or refractory material, a combustion chamberabove the firepot and an ash pit below the same, a hot blast pipeprojecting through the top of said casing and depending within thecentral portion of said combustion chamber, a damper in the upper end ofsaid pipe for controlling the admission of air to said chamber throughsaid pipe, a fluid fuel supply pipe projecting through said damper andhaving a dis charge nozzle located in the upper portion of said hotblast pipe, and a control cock in said supply pipe, said hot blast pipehaving a discharge outlet in said combustion chamber above the top ofsaid firepot and arranged to project downwardly into said firepot eithera blast of hot air or a highly heated mixture of air and gas.

EDWARD P. core.

